Flow and Heat Transfer over a Shrinking Sheet in a Nanofluid with Suction at the Boundary

The suction effect on two-dimensional boundary layer flow of a nanofluid over a shrinking sheet for three different types of nanoparticles, namely, copper (Cu), titanium oxide (TiO2), and alumina (Al2O3) is studied. Using an appropriate similarity transformation, the nonlinear system of partial differential equations is first transformed into nonlinear ordinary differential equations which are then solved numerically using a shooting method. The effects of the parameters involved namely the suction and shrinking parameters on the skin friction coefficient and the local Nusselt number as well as the velocity and temperature profiles are presented graphically and discussed. The numerical results indicate that dual solutions exist for a certain range of the suction parameter.